- 03 Jul, 2019 2 commits
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Fuqian Huang authored
vzalloc has already zeroed the memory. So a memset is unneeded. Signed-off-by:
Fuqian Huang <huangfq.daxian@gmail.com> Reviewed-by:
Jason Gunthorpe <jgg@mellanox.com> Signed-off-by:
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Fuqian Huang authored
In commit af7ddd8a ("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"), dma_alloc_coherent/dmam_alloc_coherent always zeroed the returned memory. So the memset after a coherent allocation function is not needed. Signed-off-by:
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- 02 Jul, 2019 12 commits
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Jason Gunthorpe authored
Bernard Metzler says: ==================== This patch set contributes the SoftiWarp driver rebased for latest rdma-next. SoftiWarp (siw) implements the iWarp RDMA protocol over kernel TCP sockets. The driver integrates with the linux-rdma framework. A matching userlevel driver is available as PR at https://github.com/linux-rdma/rdma-core/pull/536 Many thanks for reviewing and testing the driver, especially to Leon, Jason, Steve, Doug, Olga, Dennis, Gal. You all helped to significantly improve the driver over the last year. Please find below a list of changes and comments, compared to older versions of the siw driver. Many thanks! Bernard. CHANGES: ======== v3 (this version) ----------------- - Rebased to rdma-next - Removed unneccessary initialization of enums in siw-abi.h - Added comment on sizing of all work queues to power of two. v2 ----------------- - Changed recieve path CRC calculation to compute CRC32c not on target buffer after placement, but on original skbuf. This change severely hurts performance, if CRC is switched on, since skb must now be walked twice. It is planned to work on an extension to skb_copy_bits() to fold in CRC computation. - Moved debugging to using ibdev_dbg(). - Dropped detailed packet debug printing. - Removed siw_debug.[ch] files. - Removed resource tracking, code now relies on restrack of RDMA midlayer. Only object counting to enforce reported device limits is left in place. - Removed all nested switch-case statements. - Cleaned up header file #include's - Moved CQ create/destroy to new semantics, where midlayer creates/destroys containing object. - Set siw's ABI version to 1 (was 0 before) - Removed all enum initialization where not needed. - Fixed MAINTANERS entry for siw driver - This version stays with the current siw specific management of user memory (siw_umem_get() vs. ib_umem_get(), etc.). This, since the current ib_umem implementation is less efficient for user page lookup on the fast path, where effciency is important for a SW RDMA driver. It is planned to contribute enhancements to the ib_umem framework, wich makes it suitable for SW drivers as well. v1 (first version after v9 of siw RFC) -------------------------------------- - Rebased to 5.2-rc1 - All IDR code got removed. - Both MR and QP deallocation verbs now synchronously free the resources referenced by the RDMA mid-layer. - IPv6 support was added. - For compatibility with Chelsio iWarp hardware, the RX path was slightly reworked. It now allows packet intersection between tagged and untagged RDMAP operations. While not a defined behavior as of IETF RFC 5040/5041, some RDMA hardware may intersect an ongoing outbound (large) tagged message, such as an multisegment RDMA Read Response with sending an untagged message, such as an RDMA Send frame. This behavior was only detected in an NVMeF setup, where siw was used at target side, and RDMA hardware at client side (during file write). siw now implements two input paths for tagged and untagged messages each, and allows the intersected placement of both messages. - The siw kernel abi file got renamed from siw_user.h to siw-abi.h. ==================== * branch 'siw': SIW addition to kernel build environment SIW completion queue methods SIW receive path SIW transmit path SIW queue pair methods SIW application buffer management SIW application interface SIW connection management SIW network and RDMA core interface SIW main include file iWarp wire packet format
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
Bernard Metzler <bmt@zurich.ibm.com> Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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Bernard Metzler authored
Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by:
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- 29 Jun, 2019 13 commits
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Dennis Dalessandro authored
The call in debugfs.c for try_module_get() is not needed. A reference to the module will be taken by the VFS layer as long as the owner field is set in the file ops struct. So set this as well as remove the call. Suggested-by:
Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by:
Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by:
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Mike Marciniszyn authored
Add trace to debug map_mr_sg handling. Reviewed-by:
Kaike Wan <kaike.wan@intel.com> Signed-off-by:
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Mike Marciniszyn authored
This patch enhances the MR trace information to enable more focused debug of MR issues. Reviewed-by:
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Mike Marciniszyn authored
This was missed in the original implementation of the memory management extensions. Fixes: 0db3dfa0 ("IB/hfi1: Work request processing for fast register mr and invalidate") Reviewed-by:
Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by:
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Michael J. Ruhl authored
Uninline the aspm API since it increases code space for no reason. Move the aspm module param to the new aspm C file. Reviewed-by:
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Michael J. Ruhl authored
Add some helper functions to hide struct rvt_swqe details. Reviewed-by:
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Michael J. Ruhl authored
Historically rdmavt destroy_ah() has returned an -EBUSY when the AH has a non-zero reference count. IBTA 11.2.2 notes no such return value or error case: Output Modifiers: - Verb results: - Operation completed successfully. - Invalid HCA handle. - Invalid address handle. ULPs never test for this error and this will leak memory. The reference count exists to allow for driver independent progress mechanisms to process UD SWQEs in parallel with post sends. The SWQE will hold a reference count until the UD SWQE completes and then drops the reference. Fix by removing need to reference count the AH. Add a UD specific allocation to each SWQE entry to cache the necessary information for independent progress. Copy the information during the post send processing. Reviewed-by:
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Michael J. Ruhl authored
Currently QP allowed_ops is set after the QP is completely initialized. This curtails the use of this optimization for any initialization before allowed_ops is set. Fix by adding a helper to determine the correct allowed_ops and moving the setting of the allowed_ops to just after QP allocation. Reviewed-by:
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Kamenee Arumugam authored
When a completion queue is full, the associated queue pairs are not put into the error state. According to the IBTA specification, this is a violation. Quote from IBTA spec: C9-218: A Requester Class F error occurs when the CQ is inaccessible or full and an attempt is made to complete a WQE. The Affected QP shall be moved to the error state and affiliated asynchronous errors generated as described in 11.6.3.1 Affiliated Asynchronous Events on page 678. The current WQE and any subsequent WQEs are left in an unknown state. C11-37: The CI shall generate a CQ Error when a CQ overrun is detected. This condition will result in an Affiliated Asynchronous Error for any associated Work Queues when they attempt to use that CQ. Completions can no longer be added to the CQ. It is not guaranteed that completions present in the CQ at the time the error occurred can be retrieved. Possible causes include a CQ overrun or a CQ protection error. Put the qp in error state when cq is full. Implement a state called full to continue to put other associated QPs in error state. Reviewed-by:
Kamenee Arumugam <kamenee.arumugam@intel.com> Signed-off-by:
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Kamenee Arumugam authored
Usage of single lock prevents fetching posted and processing receive work queue entries from progressing simultaneously and impacts overall performance. Fracture the single lock used for posting and processing Receive Work Queue Entries (RWQEs) to allow the circular buffer to be filled and emptied at the same time. Two new spinlocks - one for the producers and one for the consumers used for posting and processing RWQEs simultaneously and the two indices are define on two different cache lines. The threshold count is used to avoid reading other index in different cache line every time. Signed-off-by:
Harish Chegondi <harish.chegondi@intel.com> Signed-off-by:
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Kamenee Arumugam authored
The rvt_rwqe and rvt_rwq struct elements are shared between rdmavt and the providers but are not in uapi directory. As per the comment in https://marc.info/?l=linux-rdma&m=152296522708522&w=2, The hfi1 driver and the rdma core driver are not using shared structures in the uapi directory. Move rvt_rwqe and rvt_rwq struct into rvt-abi.h header in uapi directory. Reviewed-by:
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Kamenee Arumugam authored
The rvt_cq_wc struct elements are shared between rdmavt and the providers but not in uapi directory. As per the comment in https://marc.info/?l=linux-rdma&m=152296522708522&w=2 The hfi1 driver and the rdma core driver are not using shared structures in the uapi directory. In that case, move rvt_cq_wc struct into the rvt-abi.h header file and create a rvt_k_cq_w for the kernel completion queue. Signed-off-by:
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Jason Gunthorpe authored
For dependencies in next patches. Resolve conflicts: - Use uverbs_get_cleared_udata() with new cq allocation flow - Continue to delete nes despite SPDX conflict - Resolve list appends in mlx5_command_str() - Use u16 for vport_rule stuff - Resolve list appends in struct ib_client Signed-off-by:
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- 25 Jun, 2019 6 commits
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Colin Ian King authored
There is a spelling mistake in an dev_err message. Fix it. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Doug Ledford authored
For all string attributes for which we don't currently accept the element as input, we only use it as output, set the string length to RDMA_NLDEV_ATTR_EMPTY_STRING which is defined as 1. That way we will only accept a null string for that element. This will prevent someone from writing a new input routine that uses the element without also updating the policy to have a valid value. Also while there, make sure the existing entries that are valid have the correct policy, if not, correct the policy. Remove unnecessary checks for nla_strlcpy() overflow once the policy has been set correctly. Signed-off-by:
Doug Ledford <dledford@redhat.com> Signed-off-by:
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Lijun Ou authored
This patch removes the hns-roce.ko for cleanup all the exported symbols in common part. Signed-off-by:
Xi Wang <wangxi11@huawei.com> Signed-off-by:
Lijun Ou <oulijun@huawei.com> Signed-off-by:
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Mauro Carvalho Chehab authored
The InfiniBand docs are plain text with no markups. So, all we needed to do were to add the title markups and some markup sequences in order to properly parse tables, lists and literal blocks. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by:
Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by:
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Dan Carpenter authored
This function is supposed to return negative kernel error codes but here it returns CMD_RST_PRC_EBUSY (2). The error code eventually gets passed to IS_ERR() and since it's not an error pointer it leads to an Oops in hns_roce_v1_rsv_lp_qp() Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Colin Ian King authored
There is a potential integer overflow when int i is left shifted as this is evaluated using 32 bit arithmetic but is being used in a context that expects an expression of type dma_addr_t. Fix this by casting integer i to dma_addr_t before shifting to avoid the overflow. Addresses-Coverity: ("Unintentional integer overflow") Fixes: 2ac0bc5e ("RDMA/hns: Add a group interfaces for optimizing buffers getting flow") Signed-off-by:
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- 24 Jun, 2019 7 commits
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Max Gurtovoy authored
Improve code readability using static helpers for each memory region type. Re-use the common logic to get smaller functions that are easy to maintain and reduce code duplication. Signed-off-by:
Max Gurtovoy <maxg@mellanox.com> Signed-off-by:
Israel Rukshin <israelr@mellanox.com> Reviewed-by:
Sagi Grimberg <sagi@grimberg.me> Signed-off-by:
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Max Gurtovoy authored
If possibe, avoid doing a UMR operation to register data and protection buffers (via MTT/KLM mkeys). Instead, use the local DMA key and map the SG lists using PA access. This is safe, since the internal key for data and protection never exposed to the remote server (only signature key might be exposed). If PA mappings are not possible, perform mapping using MTT/KLM descriptors. The setup of the tested benchmark (using iSER ULP): - 2 servers with 24 cores (1 initiator and 1 target) - ConnectX-4/ConnectX-5 adapters - 24 target sessions with 1 LUN each - ramdisk backstore - PI active Performance results running fio (24 jobs, 128 iodepth) using write_generate=1 and read_verify=1 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1266.4K/1262.4K 1720.1K/1732.1K 4k 793139/570902 1129.6K/773982 32k 72660/72086 97229/96164 Using write_generate=0 and read_verify=0 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1590.2K/1600.1K 1828.2K/1830.3K 4k 1078.1K/937272 1142.1K/815304 32k 77012/77369 98125/97435 Signed-off-by:
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Israel Rukshin authored
In some loads, there is performance degradation when using KLM mkey instead of MTT mkey. This is because KLM descriptor access is via indirection that might require more HW resources and cycles. Using KLM descriptor is not necessary when there are no gaps at the data/metadata sg lists. As an optimization, use MTT mkey whenever it is possible. For that matter, allocate internal MTT mkey and choose the effective pi_mr for in transaction according to the required mapping scheme. The setup of the tested benchmark (using iSER ULP): - 2 servers with 24 cores (1 initiator and 1 target) - ConnectX-4/ConnectX-5 adapters - 24 target sessions with 1 LUN each - ramdisk backstore - PI active Performance results running fio (24 jobs, 128 iodepth) using write_generate=1 and read_verify=1 (w/w.o/baseline): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1262.4K/1243.3K/1147.1K 1732.1K/1725.1K/1423.8K 4k 570902/571233/457874 773982/743293/642080 32k 72086/72388/71933 96164/71789/93249 Using write_generate=0 and read_verify=0 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1600.1K/1572.1K/1393.3K 1830.3K/1823.5K/1557.2K 4k 937272/921992/762934 815304/753772/646071 32k 77369/75052/72058 97435/73180/94612 Signed-off-by:
Idan Burstein <idanb@mellanox.com> Reviewed-by:
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Israel Rukshin authored
IB_WR_REG_SIG_MR is not needed after IB_WR_REG_MR_INTEGRITY was used. Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
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Israel Rukshin authored
Replace the old signature handover API with the new one. The new API simplifes PI handover code complexity for ULPs and improve performance. For RW API it will reduce the maximum number of work requests per task and the need of dealing with multiple MRs (and their registrations and invalidations) per task. All the mappings and registration of the data and the protection buffers is done by the LLD using a single WR and a special MR type (IB_MR_TYPE_INTEGRITY) for the PI handover operation. The setup of the tested benchmark (using iSER ULP): - 2 servers with 24 cores (1 initiator and 1 target) - ConnectX-4/ConnectX-5 adapters - 24 target sessions with 1 LUN each - ramdisk backstore - PI active Performance results running fio (24 jobs, 128 iodepth) using write_generate=1 and read_verify=1 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1243.3K/1182.3K 1725.1K/1680.2K 4k 571233/528835 743293/748259 32k 72388/71086 71789/93573 Using write_generate=0 and read_verify=0 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1572.1K/1427.2K 1823.5K/1724.3K 4k 921992/916194 753772/768267 32k 75052/73960 73180/95484 There is a performance degradation when writing big block sizes. Degradation is caused by the complexity of combining multiple indirections and perform RDMA READ operation from it. This will be fixed in the following patches by reducing the indirections if possible. Signed-off-by:
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Israel Rukshin authored
This is a preparation for adding new signature API to the rw-API. Signed-off-by:
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Max Gurtovoy authored
Protect the case that a ULP tries to allocate a QP with signature enabled flag while the LLD doesn't support this feature. While we're here, also move integrity_en attribute from mlx5_qp to ib_qp as a preparation for adding new integrity API to the rw-API (that is part of ib_core module). Signed-off-by:
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